During hot weather, dogs are at risk of overheating and dehydration. Ensure they have access to fresh water and shade at all times. Avoid walking your dog during the hottest parts of the day, and never leave them in a parked car, even for a short time. Consider using cooling mats or vests to help regulate their body temperature. Watch for signs of heatstroke, such as excessive panting, drooling, or lethargy, and seek veterinary care immediately if you suspect your dog is overheating.